Saoirse Ronan's casting caused 'domino effect' of talent on See How They Run

Tom George's new movie is set in 1950s London and pairs Saoirse's Constable Stalker with Sam Rockwell's Inspector Stoppard as they try to figure out who killed Adrien Brody's American director character Leo Köpernick during a production of famous Agatha Christie play, The Mousetrap. David Oyelowo and Ruth Wilson, as well as British comedy stars Reece Shearsmith, Tim Key and Charlie Cooper, are among the other big name talent in the flick.